Bouncing universe in modified Gauss-Bonnet gravity

被引:12
作者
Singh, J. K. [1 ]
Shaily [1 ]
Bamba, Kazuharu [2 ]
机构
[1] Netaji Subhas Univ Technol, Dept Math, New Delhi 110078, India
[2] Fukushima Univ, Fac Symbiot Syst Sci, Div Human Support Syst, Fukushima 9601296, Japan
关键词
FLRW metric; f(RG) gravity; e-folding number; Parametrization; EoS-parameter; Bouncing model; DARK ENERGY; F R; INFLATION; COSMOLOGY; MODELS;
D O I
10.1016/j.cjph.2023.05.019
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this paper, a bouncing cosmological scenario is studied in the background of a flat FLRW model with a specific parametrized hyperbolic form of scale factor a in terms of t, where & lambda; is taken as the model parameter. This model is discussed in f(R, G) formalism having structured as f(R, G) = R + F(G), where R is Ricci scalar and G is the Gauss-Bonnet invariant. The proposed functional form of the Hubble parameter is considered in such a way that it satisfies the bouncing criteria of the model, which is free from the initial singularity. The physical consequences of the model are discussed. In this model, one can see that the EoS parameter crosses the quintom line w = -1 in the neighbourhood of bouncing point t = 0, which is also a criteria for a successful bouncing cosmological model. Finally, we examine the stability of the model and find that all the essential features of bouncing model are satisfied successfully.
引用
收藏
页码:371 / 380
页数:10
相关论文
共 45 条
  • [41] Bouncing cosmology in modified gravity with higher-order curvature terms
    Singh, J. K.
    Balhara, Harshna
    Bamba, Kazuharu
    Jena, J.
    [J]. JOURNAL OF HIGH ENERGY PHYSICS, 2023, 2023 (03)
  • [42] Dynamics of a parametrized dark energy model in f (R, T) gravity
    Singh, J. K.
    Singh, Akanksha
    Goswami, G. K.
    Jena, J.
    [J]. ANNALS OF PHYSICS, 2022, 443
  • [43] Bouncing cosmology in f(R ,T) gravity
    Singh, J. K.
    Bamba, Kazuharu
    Nagpal, Ritika
    Pacif, S. K. J.
    [J]. PHYSICAL REVIEW D, 2018, 97 (12)
  • [44] f(R) theories of gravity
    Sotiriou, Thomas P.
    Faraoni, Valerio
    [J]. REVIEWS OF MODERN PHYSICS, 2010, 82 (01) : 451 - 497
  • [45] Accelerating universe in a big bounce model
    Wang, BL
    Liu, HY
    Xu, LX
    [J]. MODERN PHYSICS LETTERS A, 2004, 19 (06) : 449 - 456